Workshop Technology
Which of the following welding process uses non-consumable electrodes?

TIG welding
Submerged arc welding
MIG welding
Manual arc welding

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Workshop Technology
The purpose of a gate is to

Delivers molten metal into the mould cavity
Act as a reservoir for the molten metal
Delivers molten metal from pouring basin to gate
Feed the molten metal to the casting in order to compensate for the shrinkage

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